BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI

BULETINUL INSTITUTULUI POLITEHNIC DIN IAŞI
Publicat de
Universitatea Tehnică „Gheorghe Asachi” din Iaşi
Tomul LVIII (LXII), Fasc. 3, 2012
Secţia
MATEMATICĂ. MECANICĂ TEORETICĂ. FIZICĂ
MODELING ON HEAT TRANSFER DURING MALT DRYING
PROCESS
BY
PETRU CÂRLESCU ∗ , VASILE DOBRE, IOAN ŢENU and RADU ROŞCA
“Ion Ionescu de la Brad”
University of Agricultural Science and Veterinary Medicine of Iasi,
Department of Pedotehnics
Received: June 5, 2012
Accepted for publication: 3 July, 2012
Abstract. Development of computers and software made possible CFD
(Computational Fluid Dynamics) modeling of heat transfer phenomena in drying
of malt. Validation of mathematical model of heat transfer process in a porous
medium was achieved by measuring the temperature of the malt in several points
in the malt layer. Simultaneously with the temperature profile, obtained by CFD
simulation of air velocity profile is obtained in the drying process. Modeling and
simulation enables optimization of the drying process by increasing dry product
quality and lower power consumption.
Key words: numerical simulation, heat transfer, drying process, malt.
1. Introduction
Malt drying operation is important in the process of brewing. This
process involves high energy consumption and management according to the
drying process resulting in the final of malt and beer quality. The malt is
produced from barley and drying operations are carried out by following malt
bed of warm air flow. Hot air flow through the porous layer malt bottom-up
heating products and takes a certain amount of moisture in it and drains with air.
The loss of moisture is lost and a significant amount of heat particularly where
air is not recovered. Knowing the temperature distribution in the malt bed
∗ Corresponding author: e-mail: pcarlescu@yahoo.com